As the weather changes from hot to cold, it is inevitable that people will have diarrhea, or diarrhea, when they eat grains. Medically, diarrhea is defined as stools that are burnt or watery, unshaped, more than 3 times a day, accompanied by abdominal pain, nausea, vomiting and, in severe cases, dehydration. In terms of the duration of the disease, diarrhea that occurs in less than 3 weeks is acute diarrhea, and this type of diarrhea is most common in life. Infectious diarrhea is mainly caused by pathogenic microorganisms such as bacteria and viruses, and common diseases include bacterial dysentery and enteritis, acute gastroenteritis, and influenza. Patients who have eaten undercooked, spoiled or contaminated food, such as food that has been left too long after being removed from the refrigerator or raw seafood; and who have recently traveled, especially to foreign countries, can provide clues to the etiological diagnosis of infectious diarrhea. If diarrhea symptoms are severe or last longer than 48 hours, stool specimens should be taken from the patient for laboratory tests, including white blood cells, bacteria, viruses or parasites. Prevention and treatment: Avoid drinking raw water and food and drink. Do not consume raw or semi-raw meat, aquatic products, or dairy products. In the event of diarrhea, first treat by taking flavopiridol and or antibacterial agents such as haloperidol to sterilize the diarrhea. For diarrhea more frequently than 10 times/day, take Emmon Stop (loperamide) to reduce the number of diarrhea, and drink more water or salt-containing sports drinks to replenish fluids and salt. Avoid milk and dairy products at the beginning of the attack, and eat a light, non-oily diet of thin rice or noodles. Diarrhea may resolve within 2 days, but if bloody stools or fever develop, seek medical attention as soon as possible. Food indigestion Indigestion is caused by over-eating, that is, eating too much meat containing protein and fat, which exceeds the body’s own digestive capacity, and these indigestible excess food ferments and deteriorates in the body, and then the body expels it through nausea, vomiting, abdominal pain, diarrhea, and so on. When people are tired, as well as the elderly and children whose digestive capacity is limited, special attention should be paid to diet moderation. A simple way to prevent it is to avoid overeating, eat to 70% full, and eat less meat and greasy foods. Food allergies In addition, diarrhea can also be associated with gastrointestinal allergies to food, especially the sudden consumption of certain dietary components that were less commonly eaten in the past. Food allergy means that certain substances in food enter the body and are treated by the body’s immune system as invading pathogens and cause an immune response that has adverse effects on the body. The symptoms of food allergy are in the digestive tract (70%): abdominal pain, nausea, vomiting, diarrhea, bleeding in the digestive tract, itching in the oropharynx; skin (24%) such as rash, erythema, itching, etc.; and in the respiratory tract (6%) such as shortness of breath, chest pain, rhinitis, etc. In severe cases, the patient’s blood pressure can drop and even go into shock. About 90% of food allergens come from proteins in foods such as seafood: shrimp, lobster, crab, shellfish and unfresh fish; also artificial food additives: such as artificial colors, preservatives, antioxidants, spices, etc.; pods: peanuts, soybeans, peas; drupes: walnuts, cashews, almonds, pecans. Therefore, pay attention to those foods that have been eaten less before, eat as little as possible, such as itchy skin and diarrhea after consumption, you must not eat this food again, at the same time, if the symptoms are more serious, the use of some anti-allergy drugs, such as Xithromax.